Work in groups of 3 or 4 to find the definitions of the following WORD LIST. Word Definition Applied Force Balanced Force Buoyancy Charge Contact Force Those forces that need to touch to exert their effect Driven Gear Driving gear Effort force Electric Field The space around a charge where the effect is exerted Electromagnet A coil of wire wound around an iron nail, which becomes magnetic when a current is run through it Electrostatic Force A non-contact force that is due to a build up of charge in an object Field Space where a non-contact force exerts its effect Force Is a push, pull or a twist Friction The force which is exerted by a surface as an object moves across it Fulcrum (pivot) Gear ratio Gear Wheel Gravity A non-contact force of attraction due to the mass of an object Impact Inclined plane Induced Charge Magnetic Field The space around a magnet where the force is exerted Magnetic Force A non-contact force between a magnet and other magnetic materials Magnetic material Mass The amount of matter in an object Net Force The sum of the forces acting on an object Non-contact Force Those forces which can exert their effect without touching Physicist Pulley Resultant Force Simple machine Spring Balance Surface Tension Unbalanced Force Weight Wheel and Axil The force of gravity that is acting on a mass